RE: how to block SMTP Commands without ISA Server
- From: "Victor Naranjo" <vnaranjo@xxxxxxxxxxxxx>
- To: "'[ExchangeList]'" <exchangelist@xxxxxxxxxxxxx>
- Date: Wed, 3 Dec 2003 12:13:30 -0500
I can connect to Exchange Server doing telnet session to port 25 and execute
commands like, helo domain, mail from, etc and send a message to an internal
mailbox making impersonation .
This is a security issue, how to block this smtp commands is anybody make a
telnet session to port 25?
-----Original Message-----
From: Mulnick, Al [mailto:Al.Mulnick@xxxxxxxxxx]
Sent: Wednesday, December 03, 2003 11:48 AM
To: [ExchangeList]
Subject: [exchangelist] RE: how to block SMTP Commands without ISA Server
http://www.MSExchange.org/
Can you give an example of what you want? I suspect that blocking commands
means one thing to you and something different to me. I think of blocking
commands as disabling verbs. I suspect you want to block specific users
from sending you email. A deny or block list.
Al
-----Original Message-----
From: Victor Hugo Naranjo [mailto:vnaranjo@xxxxxxxxxxxxx]
Sent: Wednesday, December 03, 2003 11:40 AM
To: [ExchangeList]
Subject: [exchangelist] how to block SMTP Commands without ISA Server
http://www.MSExchange.org/
Help with this...
=20
In Exchange 5.5, 2000 and 2003 how to block SMTP Commands without ISA =
Server?
If the Mail from: (SMTP Command) is blocked, Can I still receive Internet
eMails?
Victor Naranjo
CONSULTANT
SYNERGY
------------------------------------------------------
List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist
Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp
Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ
------------------------------------------------------
Other Internet Software Marketing Sites:
Leading Network Software Directory: http://www.serverfiles.com
No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security
Resource Site: http://www.windowsecurity.com/ Network Security Library:
http://www.secinf.net/ Windows 2000/NT Fax Solutions:
http://www.ntfaxfaq.com
------------------------------------------------------
------------------------------------------------------
List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist
Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp
Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ
------------------------------------------------------
Other Internet Software Marketing Sites:
Leading Network Software Directory: http://www.serverfiles.com
No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security
Resource Site: http://www.windowsecurity.com/ Network Security Library:
http://www.secinf.net/ Windows 2000/NT Fax Solutions:
http://www.ntfaxfaq.com
------------------------------------------------------
Other related posts:
